There is a parallel world in the mind of a vegetative person. In this parallel world, there are nine gatekeepers and a person who connects the real world and the parallel world. Once people reach a certain age, they will want to go out on a full moon night every six months. The world they open the door will turn into a fog. What they have to face is to survive in the hands of the gatekeeper until they complete the last level, and they will wake up in the real world.
Purpose: Survive